No network usage info presented, always 0 bytes/s.

[Matheus Reich]

[Impact]

 * gnome-system-monitor 3.36.1 is the latest minor update in the 3.36 series

 * it fixes one bug (https://gitlab.gnome.org/GNOME/gnome-system-monitor/-/issues/142), and includes translation updates for a few languages, but these won't impact the package in Ubuntu because it uses the gnome language packs

[Test Case]

 * In gnome-system-monitor's preferences window, in the resources tab, set the update interval to 0.5 seconds
 * Open the resources tab and watch the network traffic graph while generating incoming and outgoing traffic (for example by running speedtest-cli)
 * Expected result: outgoing and incoming traffic on the graph is consistent with the actual traffic
 * Actual result without the bugfix in 3.36.1: the graph shows null outgoing and incoming traffic, even though the totals seem to be updated in the labels below the graph

[Where problems could occur]

 * Given the one and only code change in this update is a one-liner that adds a cast to double (https://gitlab.gnome.org/GNOME/gnome-system-monitor/-/commit/3e916c4ee21cede8465e9378fa07e9a71a472c2f), regression potential seems fairly limited. Looking at the code in more details, the change is in a function that is used only to draw the network traffic graph, it's not common code used to draw other graphs. So verifying that the bug is indeed fixed should be enough to be confident there are no regressions. Testing should be carried out with various values for the update interval, both integers and non-integers.

 * As mentioned in the impact section, this update includes translation updates, but those shouldn't apply because translations for gnome-system-monitor are shipped externally as part of the language-pack-gnome-*-base packages

[Original description]

1) Description: Ubuntu 20.04 LTS
Release: 20.04

2) gnome-system-monitor:
  Instalado: 3.36.0-1
  Candidato: 3.36.0-1
  Tabela de versão:
 *** 3.36.0-1 500
        500 http://br.archive.ubuntu.com/ubuntu focal/main amd64 Packages
        100 /var/lib/dpkg/status
     3.28.1-1 500
        500 http://cz.archive.ubuntu.com/ubuntu bionic/main amd64 Packages

3) There should be a graph drawn with the info about my network usage, as well as number on the download/upload speeds.

4) Pretty much nothing happens. It calculates how much data I've downloaded/uploaded since the OS was booted, but that's it.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: gnome-system-monitor 3.36.0-1
ProcVersionSignature: Ubuntu 5.4.0-33.37-generic 5.4.34
Uname: Linux 5.4.0-33-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.2
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Thu May 28 17:51:55 2020
ExecutablePath: /usr/bin/gnome-system-monitor
InstallationDate: Installed on 2019-12-06 (173 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
ProcEnviron:
 LANGUAGE=pt_BR:pt:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=pt_BR.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-system-monitor
UpgradeStatus: Upgraded to focal on 2020-04-25 (33 days ago)

[Matheus Reich (matheusr98)]

Here is a screenshot presenting what it happening. I'm loading webpages and watching a livestream on Twitch, and nothing is showing up on the Monitor. I have restarted the PC multiple times since I noticed that, but I think it started happening after the upgrade to Ubuntu 20.04 (GNOME 3.36).

[Sebastien Bacher (seb128)]

Thanks, it could be the same issue than https://gitlab.gnome.org/GNOME/gnome-system-monitor/-/issues/142

[Hamish McIntyre-Bhatty (hamishmb)]

I have the same issue, in my case at least it's definitely the issue you found Sebastien.

As pointed out at https://answers.launchpad.net/ubuntu/+source/gnome-system-monitor/+question/693912, Ubuntu is not a rolling release, but it would improve UX, and as noted at https://wiki.ubuntu.com/StableReleaseUpdates updates with simple changes that don't affect infrastructure may be candidates.

Of course, it's not my decision to make, and if there's no interest I will instead report to the Linux Mint people, but I figure trying upstream first is better.

[Hamish McIntyre-Bhatty (hamishmb)]

NB: I'm using Linux Mint 20, which is based on Ubuntu 20.04 and uses the gnome-system-monitor package from Ubuntu 20.04.

[Robert Roth (evfool)]

This issue is a known one in GNOME System monitor, and is fixed with 3.36.1 release of GNOME System Monitor. Hence Ubuntu and Mint should push the the 3.36.1 release to their repositories to fix this issue.

[Olivier Tilloy (osomon)]

I uploaded 3.36.1-0ubuntu0.20.04.1 to the focal queue, it's now in the hands of the SRU team.

[Hamish McIntyre-Bhatty (hamishmb)]

Thank you! :)

[Brian Murray (brian-murray)]

Hello Matheus, or anyone else affected,

Accepted gnome-system-monitor into focal-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/gnome-system-monitor/3.36.1-0ubuntu0.20.04.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-focal to verification-done-focal. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-focal. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[Hamish McIntyre-Bhatty (hamishmb)]

Okay, works for me.

Package version:

3.36.1-0ubuntu0.20.04.1 (amd64)

Details of testing:

I changed the update frequency to 0.5 and 0.25 seconds and the network graph and stats continued to work, unlike before when the graph stopped displaying meaningful information.

[Launchpad Janitor (janitor)]

This bug was fixed in the package gnome-system-monitor - 3.36.1-0ubuntu0.20.04.1

---------------
gnome-system-monitor (3.36.1-0ubuntu0.20.04.1) focal; urgency=medium

  * New upstream release (LP: #1881197)
  * debian/control{,.in}: require meson >= 0.50

 -- Olivier Tilloy <email address hidden> Mon, 07 Dec 2020 15:48:25 +0100

[Brian Murray (brian-murray)]

The verification of the Stable Release Update for gnome-system-monitor has completed successfully and the package is now being released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.